[INFO] cloning repository https://github.com/jakobdalsgaard/rust-examples [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jakobdalsgaard/rust-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakobdalsgaard%2Frust-examples", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakobdalsgaard%2Frust-examples'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8fc63475160148cdaf75c5f4ed0df6d679186a5f [INFO] testing jakobdalsgaard/rust-examples against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakobdalsgaard%2Frust-examples" "/workspace/builds/worker-74/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-74/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jakobdalsgaard/rust-examples on toolchain 722e1797249a965b6335aebd65d777f917e498f1 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jakobdalsgaard/rust-examples [INFO] finished tweaking git repo https://github.com/jakobdalsgaard/rust-examples [INFO] tweaked toml for git repo https://github.com/jakobdalsgaard/rust-examples written to /workspace/builds/worker-74/source/Cargo.toml [INFO] crate git repo https://github.com/jakobdalsgaard/rust-examples already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded futures v0.1.10 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7355acabc9b4124a74fa587110ffac3c3d18b5f1a44258cfa84d58b19e6dd175 [INFO] running `Command { std: "docker" "start" "-a" "7355acabc9b4124a74fa587110ffac3c3d18b5f1a44258cfa84d58b19e6dd175", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7355acabc9b4124a74fa587110ffac3c3d18b5f1a44258cfa84d58b19e6dd175", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7355acabc9b4124a74fa587110ffac3c3d18b5f1a44258cfa84d58b19e6dd175", kill_on_drop: false }` [INFO] [stdout] 7355acabc9b4124a74fa587110ffac3c3d18b5f1a44258cfa84d58b19e6dd175 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8c920f95147ccde86a0a39ef014e0a271c4de3ffe21b3913d57cc1275743cb74 [INFO] running `Command { std: "docker" "start" "-a" "8c920f95147ccde86a0a39ef014e0a271c4de3ffe21b3913d57cc1275743cb74", kill_on_drop: false }` [INFO] [stderr] Compiling log v0.3.6 [INFO] [stderr] Compiling futures v0.1.10 [INFO] [stderr] Compiling rust-examples v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.04s [INFO] running `Command { std: "docker" "inspect" "8c920f95147ccde86a0a39ef014e0a271c4de3ffe21b3913d57cc1275743cb74", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8c920f95147ccde86a0a39ef014e0a271c4de3ffe21b3913d57cc1275743cb74", kill_on_drop: false }` [INFO] [stdout] 8c920f95147ccde86a0a39ef014e0a271c4de3ffe21b3913d57cc1275743cb74 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 53b036495c4b83364d520c19a763450b8f316fee7c57f23a0d3827fa79219d2c [INFO] running `Command { std: "docker" "start" "-a" "53b036495c4b83364d520c19a763450b8f316fee7c57f23a0d3827fa79219d2c", kill_on_drop: false }` [INFO] [stderr] Compiling rust-examples v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::thread` [INFO] [stdout] --> examples/inc.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::sync::mpsc::channel` [INFO] [stdout] --> examples/inc.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::sync::mpsc::channel; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::sync::mpsc::Sender` [INFO] [stdout] --> examples/futurechannels.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use futures::sync::mpsc::Sender; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> examples/stdchannels.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | let (mut tx, mut rx) = sync_channel(0); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> examples/stdchannels.rs:8:16 [INFO] [stdout] | [INFO] [stdout] 8 | let (mut tx, mut rx) = sync_channel(0); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> examples/stdchannels.rs:17:7 [INFO] [stdout] | [INFO] [stdout] 17 | tx.send(7); [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `child2` [INFO] [stdout] --> examples/futurechannels.rs:28:7 [INFO] [stdout] | [INFO] [stdout] 28 | let child2 = thread::spawn(move || { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_child2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rest` [INFO] [stdout] --> examples/futurechannels.rs:66:14 [INFO] [stdout] | [INFO] [stdout] 66 | let (item, rest) = rest.into_future().wait().ok().unwrap(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_rest` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> examples/futurechannels.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | / receiver.map(|i| { [INFO] [stdout] 15 | | println!("got: {}", i); [INFO] [stdout] 16 | | }).wait(); [INFO] [stdout] | |______________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> examples/futurechannels.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | sender2.send(1).and_then(|tx| { println!("sending 2"); tx.send(2) } ).wait(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> examples/futurechannels.rs:49:3 [INFO] [stdout] | [INFO] [stdout] 49 | sender3.send(5).and_then(|tx| tx.send(6)).wait(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.00s [INFO] running `Command { std: "docker" "inspect" "53b036495c4b83364d520c19a763450b8f316fee7c57f23a0d3827fa79219d2c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "53b036495c4b83364d520c19a763450b8f316fee7c57f23a0d3827fa79219d2c", kill_on_drop: false }` [INFO] [stdout] 53b036495c4b83364d520c19a763450b8f316fee7c57f23a0d3827fa79219d2c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 5390b3dffe73cd94581bd43511329e2d9ff7f23f5dadc6b61b2ced2e3a109aca [INFO] running `Command { std: "docker" "start" "-a" "5390b3dffe73cd94581bd43511329e2d9ff7f23f5dadc6b61b2ced2e3a109aca", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `std::thread` [INFO] [stderr] --> examples/inc.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::thread; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::sync::mpsc::channel` [INFO] [stderr] --> examples/inc.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::sync::mpsc::channel; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::sync::mpsc::Sender` [INFO] [stderr] --> examples/futurechannels.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use futures::sync::mpsc::Sender; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `child2` [INFO] [stderr] --> examples/futurechannels.rs:28:7 [INFO] [stderr] | [INFO] [stderr] 28 | let child2 = thread::spawn(move || { [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_child2` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `rest` [INFO] [stderr] --> examples/futurechannels.rs:66:14 [INFO] [stderr] | [INFO] [stderr] 66 | let (item, rest) = rest.into_future().wait().ok().unwrap(); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_rest` [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> examples/futurechannels.rs:14:5 [INFO] [stderr] | [INFO] [stderr] 14 | / receiver.map(|i| { [INFO] [stderr] 15 | | println!("got: {}", i); [INFO] [stderr] 16 | | }).wait(); [INFO] [stderr] | |______________^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> examples/futurechannels.rs:30:5 [INFO] [stderr] | [INFO] [stderr] 30 | sender2.send(1).and_then(|tx| { println!("sending 2"); tx.send(2) } ).wait(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> examples/futurechannels.rs:49:3 [INFO] [stderr] | [INFO] [stderr] 49 | sender3.send(5).and_then(|tx| tx.send(6)).wait(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> examples/stdchannels.rs:8:8 [INFO] [stderr] | [INFO] [stderr] 8 | let (mut tx, mut rx) = sync_channel(0); [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> examples/stdchannels.rs:8:16 [INFO] [stderr] | [INFO] [stderr] 8 | let (mut tx, mut rx) = sync_channel(0); [INFO] [stderr] | ----^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> examples/stdchannels.rs:17:7 [INFO] [stderr] | [INFO] [stderr] 17 | tx.send(7); [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: `rust-examples` (example "inc") generated 2 warnings [INFO] [stderr] warning: `rust-examples` (example "futurechannels") generated 6 warnings [INFO] [stderr] warning: `rust-examples` (example "stdchannels") generated 3 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/rust_examples-e580461ac1d169de) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "5390b3dffe73cd94581bd43511329e2d9ff7f23f5dadc6b61b2ced2e3a109aca", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5390b3dffe73cd94581bd43511329e2d9ff7f23f5dadc6b61b2ced2e3a109aca", kill_on_drop: false }` [INFO] [stdout] 5390b3dffe73cd94581bd43511329e2d9ff7f23f5dadc6b61b2ced2e3a109aca